1997 Chevrolet Tahoe "po171 2 focus" Questions

...2 is bad, are you burning e-8, try adding some injector cleaner/seafoam, and put a tank of preimu gas in then reset the code. hi, code po171 means P0171 System Too Lean (Bank 1) This is to do with ...

...po171 is your mass air flow sensor. An expensive part but worth the money YES I SOLVED THIS! There is a recall in ford focuses for the fuel pump. If anyone goes to the Ford dealership and complains ...